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LagerLink · by Goldcote · Launching as a pilot

Plug WooCommerce shops into a parallel lager warehouse in days, not months.

LagerLink is a white-label connector for 3PLs running the parallel lager warehouse management system, built so that orders go out exactly once, tracking and stock come back, and you hear about a stuck order before the customer calls.

It is built from our own integration, which has run in production with a Swiss 3PL since 16 June 2026. LagerLink v1 is built and tested and ready for a first pilot: one multi-tenant installation for all of a 3PL’s WooCommerce clients, under the 3PL’s own brand.

Independent product; not affiliated with or endorsed by PARALLEL Informatik AG.

Book a 30-min call Request the technical overview Take the interactive tour

Or email contact@goldcote.com. We reply within 24 hours. · How it works

  • Built from a production integration
  • White-label for 3PLs
  • Multi-tenant
  • Self-hosted
  • No change to the WMS

“Days” is our onboarding target for a new shop, to be proven in the pilot.

The problem

Connecting a WooCommerce shop to a 3PL is still a project

WooCommerce is the most-used Swiss shop platform, and for many 3PLs still a custom project

WooCommerce is Switzerland’s most-used shop system by live store count: 31,830 live stores against 22,768 on Shopify (Store Leads, 25 Sep 2026). Some 3PLs connect it out of the box; for many, each WooCommerce shop is still a project. For parallel lager, we found no off-the-shelf WooCommerce plugin in the WordPress.org plugin directory (searched Sep 2026).

Each custom build takes months

A custom WooCommerce integration typically costs five figures per shop (our estimate), plus upkeep every year. Industry vendors report 60–90 days for a custom 3PL integration (Pipe17) and 4–12 weeks per client for direct APIs (Spacefill). Our own custom build took about 4.5 months from interface spec to go-live.

File interfaces don’t report errors back

Orders reach the warehouse as XML files. When a record is bad or stock is short, no error comes back to the shop: the order just waits. “Sent” doesn’t mean “accepted”, and the 3PL’s service desk becomes the status API.

The maintenance never ends

WooCommerce, WordPress and PHP release constantly. WooCommerce disables a webhook after 5 consecutive failed deliveries (developer.woocommerce.com). An adapter nobody maintains quietly decays.

How it works

One connector between the shop and the warehouse

LagerLink sits between WooCommerce and the warehouse’s existing XML file interface. It sends orders and articles out, reads completions and stock back, and tells people when something doesn’t add up.

WooCommerce shop

with the LagerLink for WooCommerce plugin

  • Orders, SKUs and language
  • Tracking and status shown to the customer
  • Stock levels (opt-in)

Sent to the warehouse: Signed order signals, plus polling

Returned to the shop: Tracking, status and stock

LagerLink

in the 3PL’s environment, one installation for many shops

  • Validate, route, or hold with a reason
  • Send exactly once
  • Reconcile and detect silent failures
  • Dashboard, API and CLI

Sent to the warehouse: Order and article XML files over SFTP

Returned to the shop: Completions, stock snapshots and movements

Warehouse on parallel lager

through its existing XML file interface

  • Picks, packs and ships
  • Reports what shipped and what’s in stock
  • No change to the WMS

Alerts, for the 3PL and the merchant

Stuck and leap-frogged orders, stock shortages, refunds after sending: by email, signed webhook, Slack, Microsoft Teams or MoltenView, each with the reason in plain words.

Orders flow from the shop through LagerLink to the warehouse; fulfilment data flows back the same way.

  1. Pair the shop

    The LagerLink for WooCommerce plugin connects with a dedicated service user, a read/write key and a one-time connection code. LagerLink checks the key’s permissions at onboarding.

  2. Pick up every order

    Signed “order changed” signals from the plugin, plus polling and a periodic reconciliation sweep with lookback, so an order that becomes sendable late is still caught.

  3. Validate, route, or hold with a reason

    Address, shipping method, SKUs, EANs, country and payment rules are checked first. Orders outside the warehouse’s scope are recorded as “routed elsewhere” or “ignored”, with the reason on screen.

  4. Read back what happened

    Completions, stock snapshots and movements come back from the warehouse. Tracking is written into WooCommerce before the “completed” email goes out, so the email carries it.

What it looks like

One cockpit for the 3PL, with every silent failure made visible

LagerLink Control Tower for a 3PL: today's order flow from the shops through LagerLink to the warehouse and back, system health, and the list of what needs a person
Attention inbox: a refund after release at the top, with its countdown to the pick wave, and the other items that need a person
Attention inbox: what needs a person, most urgent first
Order timeline of an order refunded after it reached the warehouse: shop, LagerLink, sent, picked up, refunded, with the cancellation request ready to approve
Order timeline: an order refunded after release, cancellation request ready
Live demo control: a scenario (untracked A-Post letter) triggered against the running product, with each expected reaction verified
Live demo: trigger a failure, watch the product react, verified
Screens from the running product in demo mode: simulated shops and a simulated warehouse, fake data. Operators see every shop, merchants see their own, auditors read only. English and German, light and dark. Take the interactive tour: simulate a day and inject the failures yourself.

Features

What LagerLink v1 includes

This is LagerLink v1’s first-release scope, built and covered by automated tests. In a pilot, each capability you rely on is demonstrated on your own setup before anything goes live.

Full v1 scope, 37 itemsOrder flow · Fulfilment feedback and tracking · Stock · Safety and control · Multi-tenant and white-label · The WordPress plugin · Operations

Order flow

  • Order pickup from signed plugin signals plus polling, with a reconciliation sweep, lookback and dedup
  • Configurable sendable statuses and payment rules, and an attention list for orders stuck on-hold
  • Routing by shipping country, brand or SKU prefix and shipping method; out-of-scope orders recorded with a reason, never dropped
  • Addresses taken whole from shipping (or whole from billing), never mixed, never truncated silently, never a blank country
  • Shipping methods mapped to the warehouse’s transport types; an unmapped method holds the order instead of guessing
  • Pre-upload validation: every file re-parsed, EAN-13 checksums and XML-illegal characters checked
  • Article master export from WooCommerce, mapped by SKU
  • Release immediately (the proven production behaviour, and the default), or an optional hold window to edit or cancel before release (requires 3PL confirmation)

Fulfilment feedback and tracking

  • Tracked parcel: shipped, with a carrier-aware tracking link
  • Untracked letter: shipped, honestly without a link
  • No transport data: held for human review, no status change and no customer email
  • Tracking written before “completed”, in the WooCommerce Shipment Tracking format and as an order note
  • Refund or cancel after sending: detected and classified; a critical alert plus a ready-to-send bilingual (DE/EN) cancellation request to the 3PL, tracked until handled
  • One customer-service view per order: sent, 3PL reference, completion, carrier, tracking

Stock

  • Stock snapshots summed per article across batches; blocked stock is not counted as sellable
  • A guard against suspect snapshots: a sudden large drop or an empty file blocks the stock push and alerts
  • Shortage against open demand (“order X: need 5, have 3”) and low-stock thresholds
  • Opt-in stock sync to WooCommerce with a dry-run diff first, caps, and never a negative stock level

Safety and control

  • Environment, root path and warehouse client ID validated together; a mismatch pauses that shop with a critical alert
  • Test completions never touch a live shop unless explicitly allowed
  • Per-shop run lease (no double send), tenant isolation, timeouts and circuit breakers
  • Durable send states, and temporary name, verify, rename, flag: nothing that may already have been flagged is resent automatically
  • Proposals: resend, cancel, release and stock push wait for an operator to approve them with re-authentication; the approval is bound to exactly what was shown

Multi-tenant and white-label

  • One installation serves many merchant shops, each with its own connection, warehouse endpoint, rules, alert routing and brand
  • Brand name, logo, colours, support contacts and plugin name are configuration; a build script produces a re-branded plugin
  • Roles for operators (3PL staff), merchants (their own shop) and auditors (read-only)
  • Web dashboard in English and German, and a REST API that covers everything the dashboard does

The WordPress plugin

  • “LagerLink for WooCommerce”: pairing with a one-time connection code, bound to the site so it disables itself on a staging clone
  • Signals sent asynchronously, never inside checkout
  • Silent orders: customer emails muted for orders flagged silent, so a manual order doesn’t email the customer twice
  • Status and tracking in the order admin and in the customer’s My Account
  • HPOS and blocks compatible; English, German, French and Italian (Swiss); privacy exporter and eraser; PHP 7.4–8.4

Operations

  • Alerts by email, signed webhook, Slack, Microsoft Teams and MoltenView, with dedup, snooze and escalation
  • The lagerlink CLI: doctor, dry-run, resend, cancel request, release, backup and restore, and more
  • One-click reports such as sent-not-shipped and dispatch lookup, as a table, CSV or XLSX
  • Health endpoint, Prometheus metrics, online backup, migrations and missed-run catch-up
  • Times stored in UTC and shown in local time, labelled both ways

Roadmap · planned, not in v1

What comes later

  • OAuth 2.1 for the remote MCP server
  • Goldcote-managed hosting in Switzerland or the EU (on request; provider and region fixed per contract)
  • PostgreSQL storage (v1 uses SQLite)
  • MoltenRock as a secrets provider for the LagerLink server

No dates are committed for these.

Who it’s for

For 3PLs, agencies, merchants and WMS vendors

For 3PLs

Turn each WooCommerce integration from a custom project into a configuration, under your own brand.

  • Win the WooCommerce merchants you can’t plug in today. Merchants rarely re-platform to suit a 3PL.
  • One installation for all your WooCommerce clients, white-labelled: your name on the plugin and the dashboard.
  • Onboard a new shop in days. That is our target, to be proven in the pilot.
  • Fewer “where is my order?” calls, and structured cancellation requests instead of phone calls.
  • Runs in your environment, against your existing interface. No change to your WMS.
  • A careful pilot: shadow mode first (every file built and validated, nothing uploaded), then your test Mandant, then live.

Indicative, excl. VAT: launch package from CHF 14,900; platform from CHF 390 per month self-hosted, including 5 active shops.

Book a 30-min call

For WooCommerce agencies

Stop rebuilding the same warehouse adapter. Install the plugin, configure the shop, and bill your client for onboarding. We handle the interface and keep it compatible with WooCommerce, WordPress and PHP releases.

  • Implementation and referral partner terms on request.
  • A technical overview on request.
  • Done-for-you onboarding if you’d rather not.
Talk to us about implementation partnership

Or email contact@goldcote.com (subject “LagerLink agency”).

For merchants

Go live with your 3PL without buying an ERP or paying for an agency project.

  • Tracking written into WooCommerce before the “completed” email goes out, so the email carries it.
  • An alert before a customer complains: stock shortage, stuck order, refund after sending.
  • No duplicate customer emails on manual orders.
  • An optional hold window to edit or cancel before release (requires 3PL confirmation).

Ask your 3PL about LagerLink, or talk to us.

For WMS vendors

A WooCommerce module you don’t have to build or maintain: no core change, sold under your name, maintained by Goldcote.

  • Uses the existing XML file interface over SFTP; differences between installations are set per shop.
  • Goldcote keeps up with WooCommerce, WordPress and PHP releases, so your engineers don’t have to.
  • Reseller or source-licence (OEM) terms, discussed after a first 3PL pilot.

Talk to us about a module under your name.

Compare

How LagerLink compares

Typical ways of connecting a WooCommerce shop to a 3PL, compared with LagerLink v1, which is ready for its first pilot
CriterionCustom build (agency or in-house)Merchant ERP / middlewareSaaS WMS connectorsLagerLink v1 (pilot-ready)
Works with the parallel lager XML file interfaceBuilt for each shopDepends on the productMade for the vendor’s own WMSCore v1 scope
Time per new shopWeeks to months (sources above)Depends on the ERP rolloutDepends on the vendorDays (target, to be proven in the pilot)
Silent-failure detection (stuck, shortage, refund after send)Only if built and maintainedDepends on the product and setupDepends on the WMSCore v1 scope
White-label for the 3PLPossible, per buildDepends on the productDepends on the vendorCore v1 scope
Where it runsWherever it is builtWith the merchant’s ERPThe vendor’s cloud (SaaS)The 3PL’s environment by default; managed hosting planned

Categories, not named products. Our assessment of typical approaches, 29 Sep 2026; LagerLink v1 has not yet run at a customer. “Days” is a target until the pilot measures it.

Proof

Born in production, not in a slide

Our WooCommerce → parallel lager integration has run in production with a Swiss 3PL since 16 June 2026, on the warehouse’s real XML file interface over SFTP. LagerLink is the productised, multi-tenant rewrite of that integration.

In production since (the integration LagerLink is built from)
16 Jun 2026
Lessons from production, each one a rule in LagerLink v1
30
Rows in our edge-case matrix, across 18 areas
370
Our own custom build, from interface spec to go-live
~4.5 months

LagerLink exists so the next shop doesn’t take 4.5 months. Every one of the 30 production lessons maps to rows in the edge-case matrix, and each row has a required behaviour, an alert and a test. Five of them, as outcomes:

A refunded order never ships silently

In production: An order was refunded in WooCommerce three days after it was sent. The warehouse was never told.

LagerLink v1: Detects a refund or cancellation after sending. With the optional hold window (requires 3PL confirmation), it cancels the unreleased order; otherwise it raises a critical alert and prepares a ready-to-send cancellation request to the 3PL, tracked until handled.

“Need 5, have 3” before the customer asks

In production: Two orders sat at “sent” for days. Stock was short, and no error came back.

LagerLink v1: Checks open demand against the latest stock snapshot per SKU and names the blocked order.

No order falls through the cracks

In production: Orders created on-hold and moved to processing later fell behind a creation-date cursor.

LagerLink v1: Change signals from the plugin plus a periodic reconciliation sweep with lookback and dedup.

Customers get one email, not two

In production: A manual order fired two automatic emails, and the customer thought he had been charged twice.

LagerLink v1: The plugin mutes customer emails for orders flagged silent.

A blocked connection says why

In production: A web firewall in front of our shop blocked the connector with a bare “403” error.

LagerLink v1: Identifies itself properly and, when a firewall blocks it, says so in plain words, so the merchant knows what to allow.

We don’t quote customers or count shops: LagerLink earns its own record in the pilot. Our integration has run with one 3PL so far, and we say so.

See it against your own setup

A 30-minute call, or the technical overview to read first.

Book a 30-min call Request the technical overview Take the interactive tour

Security

Security and Swiss data protection

In LagerLink v1

  • Runs in your environment by default; the dashboard binds to localhost and is exposed only through your reverse proxy or VPN.
  • scrypt passwords, optional TOTP two-factor, CSRF protection, rate-limited login, and tenant-scoped API tokens hashed at rest.
  • Secrets from environment, file or OS keychain; never logged, redacted in errors.
  • SFTP host-key pinning and entity-safe XML parsing.
  • AI access is read-and-propose: agents can read (customer data tokenised by default) and file proposals. Every change an agent requests is a proposal a human approves with re-authentication; there is no approve tool for agents.

Your data, your rules

  • Self-hosted by default, so order data stays where your warehouse data already is.
  • The Swiss revFADP has been in force since 1 September 2023 (kmu.admin.ch). We offer a data-processing agreement for any Goldcote access (support or managed hosting), including cross-border safeguards (standard contractual clauses recognised in Switzerland) where required.
  • The WordPress plugin ships a privacy exporter and eraser.
  • Security documentation (threat model, data flows, DPA annex) is delivered with the pilot.
  • Optional Molten components run on the merchant’s own Mac and send no order or customer data to Goldcote. Anything you ask an AI assistant is processed by that assistant’s provider under your own agreement with them; customer names are passed as tokens by default.

Deployment

Where LagerLink runs

v1 · default

Self-hosted by the 3PL

Docker, Linux systemd, macOS launchd or a Windows service, in your own environment. Health endpoint, Prometheus metrics, online backup and upgrades with migrations.

Planned · on request

Managed by Goldcote

Goldcote-managed hosting in Switzerland or the EU, offered on request, with provider and region fixed in the contract.

The pilot

Shadow mode first

One merchant, about 6–8 weeks (indicative): shadow mode (build and validate, no upload), then the test Mandant, then live with the operator’s go-ahead. You see every file before anything reaches your system.

Optional · Mac and AI

A Mac and AI companion, if you want one

LagerLink works on its own. For merchants on a Mac, Goldcote’s Molten apps add a live view and email drafts you send yourself. It’s optional, off by default in white-label builds, never in the order path, and if it stops, orders keep flowing.

What LagerLink v1 includes

  • A live ops dashboard on your Mac in MoltenView, with no customer data in it.
  • Cancellation requests and customer replies saved as drafts in your own mailbox through MoltenRock. It can read and draft email, never send or delete. You press Send. Your IMAP password never leaves MoltenRock.
  • An MCP server for AI agents with read and propose tools only. There is no approve tool: a human approves every change an agent proposes.

Control, not isolation

MoltenRock is built to keep API keys in a Secure-Enclave-backed vault instead of plain-text config files, and to serve them only to the agents you allow, with every use logged. Mail access through MoltenRock’s local bridge is open to your own user’s apps unless you set an agent policy. That is control over access, not isolation: an agent you allow can still use what you give it.

Not on a Mac? You get the same information through the web dashboard and the API. macOS accounts for about 29.9 % of Swiss desktop web traffic (StatCounter, Aug 2026), so we built for it, but never require it.

Explore MoltenRock

FAQ

Frequently asked questions

What is LagerLink?

LagerLink is an independent, white-label, multi-tenant connector between WooCommerce shops and warehouses running parallel lager. It is designed to send orders to the warehouse exactly once through the warehouse’s existing XML file interface, bring tracking and stock back into WooCommerce, and alert on problems a file interface doesn’t report, such as stuck orders, stock shortages and refunds after sending. LagerLink v1 is built and tested, and it launches with a first pilot; it has not yet run at a customer.

Is LagerLink live?

The integration LagerLink is built from has run in production with a Swiss 3PL since 16 June 2026. LagerLink itself is the productised, multi-tenant rewrite of that integration. LagerLink v1 is built and tested, and it has not yet run at a customer. It launches with a first pilot, which starts in shadow mode: LagerLink builds and validates every file without uploading anything.

Is LagerLink made or endorsed by PARALLEL Informatik AG?

No. LagerLink is an independent product by Goldcote Ltd and is not affiliated with or endorsed by PARALLEL Informatik AG. It exchanges files with the warehouse through the XML file interface over SFTP that the warehouse already uses.

Does the warehouse system need to change?

No. LagerLink exchanges XML files over SFTP through the warehouse’s existing interface, so nothing changes inside the WMS. Differences between installations, such as file names and paths, are set per shop.

Who is LagerLink for?

Mainly 3PLs that run parallel lager and want to connect WooCommerce merchants under their own brand. WooCommerce agencies can implement it for their clients instead of building an adapter per shop, WMS vendors can offer it as a module under their own name, and merchants can ask their 3PL about it or talk to us directly.

Where is the data hosted?

By default LagerLink runs in the 3PL’s own environment, so order data stays where the warehouse data already is. Goldcote-managed hosting in Switzerland or the EU is planned, on request. We offer a data-processing agreement for any Goldcote access (support or managed hosting), including cross-border safeguards (standard contractual clauses recognised in Switzerland) where required.

Do I need a Mac or MoltenRock?

No. The Mac companion and the Molten apps are optional, off by default in white-label builds, and never in the order path. Everyone gets the same information through the web dashboard and the API.

What does LagerLink cost?

It depends on who buys it. For 3PLs (indicative, excl. VAT): a launch package from CHF 14,900, and the platform from CHF 390 per month self-hosted, including 5 active shops. Direct merchant plans start from CHF 49 per month, excl. VAT. All prices are proposals and are confirmed in writing for each pilot.

What if Goldcote disappears?

LagerLink is self-hosted, so it keeps running in your environment. We offer source-code escrow with an independent Swiss escrow agent, with terms per contract and the agent to be agreed.

Next step

Book a 30-min call

3PLs: pick one WooCommerce merchant and run LagerLink in shadow mode next to it. You see every file before anything reaches your system.

Agencies, merchants and WMS vendors: tell us your setup, or ask for the technical overview first. We reply within 24 hours.

Prefer email? contact@goldcote.com (subject “LagerLink”)

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